That was so hot and innocent at the same time!! Loved it all from the realization, sadness, awareness, sex, and finally the love!!(^∇^)
Well, it was their first time doing it, plus during the first "first" one, they were just drunk and had it due to Renko being happy that Merry manage to come fine from what happened in Trojan Green Asteroid and had to celebrate it someway. But still, being both girls and like 19-20 years old students of uni, they would have learned about "the bees and the birds", but still, it wasn't bad for a first time for them though.